My goal is to use this HTTPS Request to interact with the Comments field on a submitted form. Strangely, my solution was working just a couple days ago, yet it has suddenly started producing this error.
My activity URI is: /_api/web/lists/getbytitle('Intake Requests')/items()/Comments
Headers are: Content-Type: application/json;odata=nometadata and Accept: application/json;odata=nometadata
I have confirmed that the field is still named 'Comments' and that the list of submitted forms is still named 'Intake Requests'. What else could have caused this error to start out of nowhere?